Reports of a growing illegal gambling market consisting of unregulated slot machines in several states concerned Penn Entertainment CEO Jay Snowden enough to look into it.

The regional casino operator has 43 properties in 20 states, including the M Resort in Henderson. Seven of those licensed gaming locations are in its home state of Pennsylvania, one of the jurisdictions cited as having tens of thousands of unlicensed gambling machines, according to state gaming regulators.

Snowden sent members of his management team into Pennsylvania communities to visit convenience stores, bars and taverns to investigate reports of illegal gambling.

He wasn’t happy with the findings.

“We have photos of children playing these games and families engaging on these games,” Snowden told attendees at the Global Gaming Expo in Las Vegas last week during an executive keynote session moderated by CNBC journalist Contessa Brewer.